Normally I recommend Hell's Kitchen for breakfast, but I don't know about their hash. I'll bet the hash at Manny's is good, though pricy. (Their other breakfasts are pretty huge, though, huge.) Key's is pretty greasy-spoonish, but I like their hash (downtown Minneapolis location only. The Key's are all owned and operated by different members of the same extended family. Some are better than others. I think the downtown Minneapolis location is the best of the bunch. There are others I won't step foor into...) and in-house baked bread. I've only had lunch at Firelake and only once, but it was pretty good and feature a lot of local foods, including Red Lake Walleye, which I'd never had before. (More other walleye sold in restaurants in MN is from Canada). I see they have a walleye hash. http://chowhound.chow.com/topics/773790

Make it a point to hit the lobby bar, Bradstreet Crafthouse, for some inventive and delicious cocktails. They're expensive, but the prices go WAY down during happy hour.

For breakfast, it's only a 5-10 minute walk to Hell's Kitchen. It's one of the best breakfast places in town, and their take on corned beef hash is my favorite item on the menu. For more traditional corned beef hash, I'd recommend Ike's.

For dinner, it's a 10-15 minute walk to 112 Eatery, which is exactly what you're looking for. Delicious food crafted by our newest member of the James Beard club in a small, cozy, unpretentious setting. Call to book a table right now. If you can't get a table, Saffron is right across the street and is also worth a visit.

I'd also highly recommend Haute Dish. It's a block away from 112/Saffon and features playful and delicious interpretations of classic Midwestern dishes.

I would also check out Cosmos, the restaurant in the hotel. It is an exceptional place, even if it does not fall neatly within your request. Take a look at the menu before you write it off. It most definitely is not a "hotel restaurant."